1975357964 has 24 divisors (see below), whose sum is σ = 3483916800. Its totient is φ = 979968384.

The previous prime is 1975357963. The next prime is 1975358029. The reversal of 1975357964 is 4697535791.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1975357963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990152 + ... + 992144.

It is an arithmetic number, because the mean of its divisors is an integer number (145163200).

Almost surely, 2^1975357964 is an apocalyptic number.

It is an amenable number.

1975357964 is a deficient number, since it is larger than the sum of its proper divisors (1508558836).

1975357964 is a wasteful number, since it uses less digits than its factorization.

1975357964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809 (or 3807 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 56.

The square root of 1975357964 is about 44444.9993137586. Note that the first 3 decimals coincide. The cubic root of 1975357964 is about 1254.7251481933.

The spelling of 1975357964 in words is "one billion, nine hundred seventy-five million, three hundred fifty-seven thousand, nine hundred sixty-four".